Americans have joined the global chorus of voices condemning the terrorist attacks in Paris, offering condolences to the victims' families and expressing solidarity with the French people.

Congressional lawmakers, presidential candidates, Muslim organizations and voices on social media are among those speaking out about the attacks, which left at least 129 people dead and more than 350 wounded.

The State Department said Americans were among the wounded, but the number wasn't known. California State University in Long Beach confirmed Saturday that one of its students, Nohemi Gonzalez, had been killed. She was shot in one of the restaurants that was targeted. The school gave no details about how she died. Gonzalez was studying design in France.

Flowers, lighted candles and other signs of sympathy began piling up outside the gates of the French Embassy in Washington within hours of the Paris attacks. Security at the embassy was immediately bolstered. Rallies were being held throughout the day Saturday in New York City. The iconic Empire State Building, which normally shines in the night sky, went dark to show unity with Parisians.

The Saturday matinee performance and radio broadcast of New York's Metropolitan Opera began with the chorus and audience singing "La Marseillaise," the French national anthem.

'United and unbowed'

The speaker of the U.S. House of Representatives, Paul Ryan, said Americans are "united and unbowed" in their support for the French people. "It will take time to grasp the scale of this horror," Ryan said in a statement, "but there is one thing we already know: Terror will not prevail. We will."

A memorial to victims of the coordinated terrorist attacks in Paris Friday grows outside the French Embassy in Washington, D.C., Nov. 14, 2015.

House Foreign Affairs Committee Chairman Ed Royce said his thoughts and prayers were with all affected by the "horrific" attacks in Paris, the worst terrorist incident in Europe in years.

"France has been among our closest allies in combating terrorism," Royce said in a statement. "...The people of France stand on the front lines in the fight against a dangerous and growing jihadist ideology that knows no bounds."

Several presidential candidates, including Democrats Hillary Clinton and Bernie Sanders and Republicans Donald Trump and Ben Carson, took to Twitter to send their prayers to the victims of the attacks.

Clinton, the Democratic front-runner, said details of what happened in Paris were "harrowing." Democrat Martin O'Malley urged people to "turn deaf ears to hatred" and be their best in the face of terrorism.

Islam forbids 'killing the innocent'

A number of U.S.-based Muslim organizations denounced the attacks, including the Council on American-Islamic Relations (CAIR), the largest Muslim civil rights and advocacy group.

"These savage and despicable attacks on civilians, whether they occur in Paris, Beirut or any other city, are outrageous and without justification," CAIR said.

"We condemn these horrific crimes in the strongest terms possible. Our thoughts and prayers are with the loved ones of those killed and injured and with all of France. The perpetrators of these heinous attacks must be apprehended and brought to justice."

The Ahmadiyya Muslim Community, one of the oldest Muslim organizations in the U.S., said the attacks were directed at "all of humanity" and did not reflect the beliefs of the Prophet Muhammad.

A small girl lays flowers as part of a memorial to victims a day after more than 120 people were killed in a series of attacks in Paris, Nov. 14, 2015.

"Islam teaches in the Quran that the killing of an innocent is like the killing of all mankind," the group said in a statement. "Prophet Muhammad was a noble, kind and patient man who protected the lives of all, regardless of religion, and did not engage in such terrorist attacks."

Reactions on social media were mixed. Many who posted on Twitter or Facebook sympathized with the victims in Paris; others broadly linked Islam to terrorism.

Laurie Beth Jones, an author of Christian books, posted under the Twitter hashtag Prayers4Paris: "So sad about Paris attacks. May the City of Lights outshine all the darkness."

The organization Godless Utopia, which calls for "a perfect world with no religion," posted on Twitter and Facebook: "Don't pray for Paris. Fight against hateful, oppressive religious ideology."